Ken Griffin acquired 17.4 Thousand United Therapeutics shares worth $3.83 Million. That's 0.00% of their equity portfolio (1908th largest holding). The first United Therapeutics trade was made in Q2 2013. Since then Ken Griffin bought shares 44 more times and sold shares on 46 occasions. The stake costed the investor $2.56 Million, netting the investor a gain of 50% so far.